Calcined Mica Powder from China - Quality Suppliers and Factory for Enhanced Coatings and Construction Materials

Calcined mica powder is a premium mica material meticulously processed by heating selected natural mica in a controlled environment. This calcination process effectively reduces volatile components and surface impurities while preserving the natural layered structure of mica. The result is a product with enhanced purity, thermal stability, consistent color, and superior performance in various industrial applications. Mica, a natural silicate mineral, features a distinct plate-like structure that endows calcined mica powder with remarkable characteristics such as excellent heat resistance, electrical insulation, chemical stability, flexibility, low thermal conductivity, and excellent barrier performance. Due to these beneficial properties, calcined mica is extensively utilized in coatings, plastics, rubber, welding materials, insulation products, refractory materials, construction materials, decorative finishes, and composite formulations. When compared to standard natural mica powder, calcined mica powder offers a cleaner aesthetic and improved heat-treated stability, making it an ideal functional mineral filler. It enhances the durability of coatings, improves surface texture, ensures dimensional stability, and boosts anti-cracking performance, insulation, and thermal resistance. In decorative applications, coarser calcined mica flakes create a natural mineral texture and a visually striking flake effect. As a leading China supplier and factory of calcined mica powder, WANCHENG MINERAL is committed to meeting the diverse needs of global customers. In addition to our standard calcined mica products, we have innovatively developed a special silver calcined mica grade that showcases a stunning silver appearance after calcination. This unique product is currently available in 10 mesh, 20 mesh, and 40 mesh sizes, catering specifically to clients seeking visible silver mica flakes, decorative mineral texture, or distinct surface effects in coatings and building materials.

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Product Details

Chemical Component	Typical Content	Description
SiO2	42% - 48%	Main silicate component
Al2O3	28% - 38%	Main alumina component
K2O	7% - 11%	Typical mica alkali component
Fe2O3	1% - 6%	Affects color and mineral characteristics
MgO	0.5% - 3%	Minor component
CaO	<=2%	Minor component
Na2O	<=1.5%	Minor alkali component
Loss on Ignition	Reduced after calcination	Depends on calcination process

Frequently Asked Questions (FAQ)

What is the primary chemical component of this material?

The primary chemical component is Silicon Dioxide (SiO2), which typically ranges from 42% to 48% and serves as the main silicate component of the mineral.

How much Alumina (Al2O3) is typically present in this composition?

Alumina (Al2O3) is the second most abundant component, with a typical content ranging between 28% and 38% as the main alumina component.

What role does Potassium Oxide (K2O) play in this mineral?

Potassium Oxide (K2O) is present at 7% to 11% and acts as a typical mica alkali component, which is crucial for defining its mineral characteristics.

Does the content of Iron Oxide (Fe2O3) affect the material?

Yes, Iron Oxide (Fe2O3) is present in concentrations of 1% to 6%, and it directly affects the color and overall mineral characteristics of the material.

What happens to the Loss on Ignition (LOI) during processing?

The Loss on Ignition is reduced after the calcination process. The final reduction level depends strictly on the specific calcination process applied.

What are the minor components found in this chemical profile?

The minor components include Magnesium Oxide (MgO) at 0.5% - 3%, Calcium Oxide (CaO) at <=2%, and Sodium Oxide (Na2O) as a minor alkali component at <=1.5%.

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